They're both the bad guy, but from the sound of it, the insurance companies are worse. They will delay cases and deny claims which result in people dying sooner rather than going through a long, costly, but ultimately life-saving treatment, to save themselves money in the long run.

The alleged shooter was clearly referencing this book which talks about it: https://en.wikipedia.org/wiki/Delay,_Deny,_Defend

I haven't read the book, I'm just recalling what I've read about it.